Burner



my zl, 1931. C. R, BAKER -1,811-',o39

` BURNER Filed March 18,' 1929 jQJ 25 YUH Eli mit a substance on which the flame Patented July 21, 1931 uNi'rE`v 'STATES PATENT; OFFICE `caminatas R. BAKER, orV EvANsToN, ILLINOIS BURNER Application filed March 18, 1929. Serial No. 347,869.

This invention relates to an improved combination Bunsen burner and blow-pipe of compact and simplied formv wherein an illuminating gas supply pipe and a compressed air pipe are connected to a common base having a Bunsen burner standard mounted thereon and providedv with a plurality of control valves for the operation of the Bunsen burner portion of the device, and furthermore provided with a 'needle valve mechanism controlling the supply of coinpressed air to a compressed air pipe which projects axially upward through the Bunsen burner standard and through a Bunsen burner ,nozzle removably engaged on the standard.l f

It is an object 'of this invention to provide an improved combination Bunsen burner having a blow pipe arrangement adapted to be operated by compressed air controlled by a needle valve arrangement whereby a current of compressed air is adapted to be delivered through a gas'iameto produce a flame pencil of great heat intensity to perencil is directed to be intensely heated, used or v vitrifled.

It is a further object of this invention to provide an improved burner which may be used either asa Bunsen burner or as a'blowpipe burner with the blow-pipe burner being provided with a control valve for governing the passage of compressed air axially into a gas flame to produce a required liame pencil.

It is an important object of this invention to provide a combination Bunsen burner and blow pipe device of compact form wherein a needle valve controlled compressed air supply pipe or stem is axially mounted within Aa Bunsen burner standard and projects upwardly throughl the removable cap or nozzle of the Bunsen burner so that either a Bunsen flame or a blow pipe pencil flame may be emitted from the removable nozzle of the burner depending upon the adjustment of a plurality of control valves which govern'the supply of'gasjand air to the burner.

Other and further important objects of this invention will be vapparent from the-disclosures in the specification and the accompanying drawings.

The invention (in a 4preferred'form) is illustrated in the drawings as vhereinafter more fully described.

On the drawings:

Figure l is a top plan view of an improved burner embodying the principles of this invention and having fragmentary portions of a gas supply hoseand a compressed airsupply hose connected therewith.

Figure 2 is a side'elevation of the burner.

Figure 3 is a bottom plan View of the burner illustrating the operations o" the Bunsen burner air control valve in dotted f line. v

Figure 4 is a detailed sectional view taken on line IV-IV of Figure 2 with parts in elevation. y

Figure 5 is a fragmentary horizontal section through the base portion of the burner taken on line V-V ,of Figure 2.

As shown on the drawings z- The reference numeral l indicates a metal base plate provided with an integral radially directed arm or extension 2 having a leg or foot 3 integrally formed at the bottom of the outer end thereof. The arm or extension 2 projects radially inwardly beneath the base plate l forming a boss 4 the inner end of which is rounded. The base plate l is provided on its underside with two legs or feet which furthermore serve as stop members for limiting the movement of vthe lever arm or handle 6 which is integrally' formed radially on an air control valve or disc 7 which isv rotatably mounted on the underside of the boss 4 centrally beneath the base plate 1. The other end of the valve operating handlefor-lever 6 is bent upwardly and then inwardly over the Atop of the base plate l to aiord an indicator or pointer 8 to designate the position of the air control valve 7. The air control valve 7 is provided with a pair of air intake openings or apertures 9 which areV positioned diammetricallyv opposite one another on opposite sides of the mounting screw 10 of the valve 7. The valve 7 is the Bunsen air control valve which con- ,trols the admittance of atmospheric air from the bottom of the base plate upwardly into a passaged Bunsen burner standard 11 which is integrally :formed centrally upon the top of the base plate 1. The 'upper end of the standard 11 is oic reduced diameter and is externally threaded at 12 to removably receive the internally threaded cap or hood portion 13 of a Bunsen llame nozzle or .pipe

14 which is intee'rallr formed axiall u on,

the top or' the cap or hood 13. The standard 11 is provided with two passages v15 Vwhich extend longitudinally through the standard and continue through the inner portion oi the boss 4. When the atmospheric aircontrol valve 7 is in open position the apertures -on one end of a gas supply hose or pipe 17 whereby illuminating gas may be supplied to the burner. The gas supply passage in the nipple or stem 1G registers with a vgas passage 18 formed in the boss 4 ot the base of the burner clearly illustrated in AFigure A gas control valve 19V is rotatablysnpported in the arm 2 and proj ects'through-the passage 18 to control the -liow 'ot gas therethrough into a pipe 21 which is embedded longitudinally within a passage provided in the boss 4 as shown in Figure 5. The outer end of the pipe 21 is closed by means o'lial screw plug 2O or other suitable means. The top of the embeddedgas pipe 21 is provided with a pair ot gas outlet apertures Y37 positioned to permit a supply of to be discharged therefrom into the passages 15 provided in the burner standard 1-1.

It will thus 'be notedthat by adjusting the gas control valve 19 that Aa supply oi' illuminating gas maybe admitted into the burner base arm 2 through the passage 18 and into the embedded pipe 21 from which the gas is permitted to escape yor pass upwardly through the outlet apertures 37 (Figure 1) into the passages 15 of the burner standard 11 to carburate or mix with a supply oi air at atmospheric pressure which is admitted through the bottom ot the burner through the valve openings 9 oiPA the disc valve 7 whichis operable by means ot the handle or lever 6, so that the valve may be adjusted. with the openings 9 thereof in open position as indicated in full lines in Figure 3, or in a closed position as indicated by the dotted lines of said figure. y

The improved burner is readily adapted to be converted from a Bunsen burner into a blow type burner. Also rigidly secured in the outer end oi the extension arm 2 of the burner base is a tapered nipple or stem 22 provided With a longitudinal air intake passage 23, the inner end of which communicates with a horizontal passage 24 provided in the boss 4 of the base member. The inner end of the compressed air passage 24 communicates with the lower end of a vertical auxiliary compressed air passage 25 which `is ormed in :the standard 11 as clearly illustrated in Fig. 4. The upper end of the vertical air passage 25 is closed 'bymea-ns 'of a screw plug 26 or other suitable means. Removably engaged on the compressed air intake nipple or stem 22 is one end kof acompressed air supply hose or tube 27 the other end of which may be connected lwith any suitable :source of -compressed air.

Integrallyormed radially yon one iside of the'standard ll'is alsleeve or pipe28 which ris externally threaded to removably receive aniinternallythreaded and apertured capi29. The cap V29 holdsa packingzring 30 (Fig. 4) against the end -of the `sleeve28 around :a threaded needle valve lstem 31 whichis adjustably threaded through the sleeve J2Sand is provided yon its .exterior `end with a disc head 32 .to Vfacilitate adjustment vof thetapered inner valve end-ofthe valve stem :31. rlhe standard 11 .is provided with a :radial apassafge 33 whichconnects up with the passage in the sleeve 28 and crosses the vertiical compressed air passage 25 to Ipermit compressed air from the-passage 25 to enter the radial passage 33 -When the needle valve is open. The inner end-oft'he-radial ,air pas sage 33 communicates with an opening 34 vprovided in acompressed air 'tube or pipe 35 which is axiallyengaged in :an axial passage provided in the standard ll. rThe compressed air pipeor .nozzle 35 ,projects upwardly above the top end of the standard 11 and has the upper end thereof tapered to :form a tip .36. The .compressed air -tube or pipe 35 projects axially through thecap .or hood 13 and through the greater portion v -of-the burnernozzle 14 `with the compressed air tip 36 positioned a short distancebelow lthe outer opened `end vof said nozzle .14, as clearly illustrated .in Figure .4.

The operationof .the improved combined 1.15

Bunsen and blow-pipe burner is very simple. When it is desired to use the improved burner as a Bunsenburner only the ,needle valve 31 is closed thereby shutting 01E the supply of compressed air from the com- H pressed air supply pipe 27 so that no compressed air is permitted to enter the axially disposed air 'tube or nozzle 35-3G- yThen the handle or lever `6 o `the Bunsen burner air control valve '7 is in the full line posif.

tion of Figure 31against the stop 'or foot 5 the pointer or indicator 8fis-in'register with the arrow"B7 andthe valve 7 and the v-lower Vends of the air `intake passages -15 are `open. `When the -air valve 7 .ismoved into arclosed position the gas control valve 19 may also be closed. If only a gas fia-me is desired the gas valve 19 may be opened and the air valve 7 is then left closed.

To use tlie Bunsen burner the atmospheric air control valve 7 is opened by moving the valve control arm 6 from its closed position A in Figure 1 into a completely open position indicated by B in Figure 1. The atmospheric air control valve 7 may of course be opened any desired amount, so that any desired amount of air at atmospheric pressure may be admitted into the bottom of the burner standard 11. The gas valve 19 may now be opened any desired amount to permit the gas from the supply hose 17 to be admitted through the nipple 1G and the gas passage 18, from which passage the gas is permitted to flow and pass through the gas tube or pipe 21 from which the gas is permitted to escape through the outlet aperture or opening 37 provided in the top of the tubeor pipe 17 directly in the path of the passages 15 through which air is admitted. The gasesl admitted into the burner standard pass upwardly through the burner nozzle 111 and are carburated with atmospheric air which is drawn upwardly through the bottom of the burner. through the air passages 15. The nozzle or jet 14 of the burner permits the gas and air mixtures to escape through the upper end thereof so that the burner may be lighted by means of a match to produce a feebly luminous but extremely hot flame. The amount of oxygen supplied through the illuminating gas coming from the supply pipe may be varied by adjusting the atmospheric air control valve 7. f

When it is desired to use the improved burner as a blow flame burner device'it is only necessary to open the compressed air control needle valve 31 by turning the disc head 32 so that compressed air from the compressed air supply pipe 27 may be admitted through the passages 23 and 2li into the vertical passage 25 from which the compressed air is permitted to pass through the radial passage 33 into the compressed air nozzle or pipe 35 through the opening 34. The compressed air is thus permitted to be discharged through the restricted outlet tip 36 directly and axially into the gas flame at the upper end of the nozzle 14. The blast or current of compressed air driven through the gas flame produces a pencil flame of great heat intensity which may be directed at will upon a suitable object or objects to fuse, vitrif'y' or heat the same intensely. l/Vhen the device is used as a blow flame mechanism, rthe atmospheric air control valve 7 is closed. so that only an ordinary gas flame issues from the burner nozzle 14. The blow flame is produced by opening the compressed air control valve 31 `permitting compressed air to be admitted directly into the rgas flame to produce a pencil blow flame.

It will of course be understood that many changes may be made and many details of construction may be varied through a wide range without departing from the principles of this invention, and it is therefore not purposed limiting the patent granted hereon otherwise than necessitated by the scope of the appended claims. I claim as my invention:

1. A burner comprising a passaged base, a standard mounted thereon, an air control valve mounted on said passaged base to control the supply of air to said standard, a gas control valve lmechanism in said passaged base for controlling the supply of gas into said standard to mix with the atmospheric air to permit the burner when lighted to produce a Bunsen flame,a compressed air supply nozzlemounted in said standard, and a needle valve mechanism for controlling the supply ofcompressed air to said compressed air supply nozzle to be directed axially into the gas fiame to convert the same intoy a blow-pipe flame whenlthe air control valve is close 2.-A` burner comprising a passaged base, a' passaged standard mounted thereon, a nozzle removably engaged on said standard, an

atmospheric air control valve mounted on said base, a gas control valve mounted lon said base for controlling the supply of gas through said standard, a compressed air jet in said standard and projecting through a portionof said nozzle, and a compressed air supply valve on said standard for controlling the flow of compressed air through said compressed air jet.

' 31A burner comprising a passaged apertured base, a passaged standard mounted thereon, a burner nozzle removably mounted on said standard, a primary air control valve mounted on said apertured base to control the supply` of atmospheric air through said burner nozzle, a gas control valveV mounted on said base for controlling the supply of gas to said nozzle,'and means disposed within said nozzle `to permit a supply of compressed air to be admitted into-said nozzle. 4. A burner comprising a passaged base,

a nozzle removably mounted thereon, anV

atmospheric air supply control valve adjustably mounted on said base, a gas supply control valve mounted on said base, a compressed air jet axially mounted in said nozzle, and control means connected therewith for controlling the supply of compressed air throughy said nozzle to convert a gas llame into a blow flame.

5. A burner of the class described comprising a base having passages therein, a standard mounted on said base and also provided with passages, a burner nozzle removably mounted on said standard, an atmos- Lpheric-control valve mounted yon said base, a vgas control valve mounted on said v base, -a compressed air supply jet mountedin said standard and projecting part Way through '5 said nozzle, and a Vcompressed *air control Valve mounted on said standard 'for controlling the passage of compressed air from saidjet through said nozzle.

6. A burner of the class described com- 10 prisng a passaged base, a-passagedstandard integrally formed thereon, an atmospheric control valve mounted on said base, a handle connectedthereyvith for operating the same, ,legs formed on said base to support the same 15 and to serve as stops for the movement of the atmospheric air'control valve handle, a ,gas `control valve mounted on said base to govern the supply of gas through said standard, a nozzle removably mounted on said .20 standard and adapted to permita supply of atmospheric air and gas to be ejected from the mouth thereof and lighted to produce a iBunsen flame, a compressed air supply jet axially mounted in said standard and pro- :25 jecting into said nozzle to direct a blast of compressed air axially through a gas 'flame to convert the same into a bloW tlame,fand a .compressed air control valve on said ystandard andconnected With said jet to control o the passage of compressed air therethrough.

7. A burner of the class described comprising ,a lpassaged base, a nozzle removably mounted thereon, a gas control valve mounted on said basefto control the supply of gas 35 through said nozzle, an .atmospheric air control valveon said base to control the supplyi of atmospheric air through 'said `nozzle to be carburated with the gas, a compressed air jet mounted in said base and projecting into A0 said nozzle, and means mounted onthe base Afor controlling the passage of `compressed .air through said jet and through'said nozzle to be `driven through the gas flame resulting ffrom the burning of gas emitted from said 45 nozzle to convert said gas flame into agpencil blow flame.

In testimony whereof I have hereunto subscribed my name at Chicago, Cook County, Illinois.

va0 CHARLES R. BAKER. 

